Volcano Basics
This is an opening in Earth’s crust where lava erupts.
What is a volcano?
A volcanic eruption can be dangerous if it happens near where ______ live.
Who are people?
This type of volcano erupts quietly, like those in Hawaii.
What are quiet eruptions?
Most volcanoes are found where Earth’s ______ meet.
What are plates?
Hawaii is not near plate boundaries but formed over this.
What is a hot spot?
Molten rock before it reaches Earth’s surface is called this.
What is magma?
The Krakatau eruption caused huge waves called these.
What are tsunamis?
Violent eruptions can empty the magma chamber and cause this to form.
What is a crater?
The largest plate on Earth is called this.
What is the Pacific Plate?
A hot spot forms when a plume of this rises from the mantle.
What is magma?
Molten rock after it reaches Earth’s surface is called this.
What is lava?
The Krakatau explosion was so loud it was heard in this country.
What is Australia?
If a crater forms on land, it may fill with this.
What is water?
The pattern of volcanoes around the Pacific Plate is called this.
What is the Ring of Fire?
The Pacific Plate moving over a hot spot creates this.
What is a chain of volcanoes?
Volcanoes release these three things: ___, ___, and gases.
What are lava and ash?
Ash from Krakatau reached this far into the atmosphere.
What is 50 miles?
Crater Lake is located in this state.
What is Oregon?
About this many active volcanoes are on Earth.
What is 500?
This island is the youngest in Hawaii.
What is the Big Island (Hawaii)?
Mauna Loa is located on this island.
What is the Big Island of Hawaii?
The Krakatau eruption cooled Earth’s surface by this many degrees.
What is 2 degrees?
When magma and gas escape, the rock above may do this.
What is collapse?
Three U.S. states on the Ring of Fire are ______, ______, and ______.
What are Alaska, Oregon, and Washington?
A volcanic mountain on the ocean floor is called this.
What is a seamount?